Gage.



F. A. HOLLANDT & J. SMITH.

GAGE.

APPLICATION FILED 00130, 1012.

1,107,789. Patented Aug. 18, 1914.

wuewliozs HOLLHNDT SUM/mu;

UNITED STATES 'iP rrEN'r oFFIo FRIEDRICH AUGUST HOLLANDT AND JOHN W.SMITH, OF ILION, NEW YORK.

GAGE.

Specification of Letters Patent. 4 Patented Aug; 18, 1914.

Application filed October 30, 1912. Serial No. 728.604.

1 '0 all whom it may concern:

Be it known that we, I nncnmc1i AuoUs'r HoLLANn'r and JOHN W. SMrrI-I,citizens of the United States, residing at Ilion, in the county ofHcrkimer and State of New York, have invented certain new and usefulImprovements in Gages, of which the following is a S]')O(3ifiC:tll()ll,reference being had to the accompanying drawings.

This invention relates to new and useful improvements in gages and moreparticularly-to a recision angle gage, the object of the invention beingto provi e a gage of this character which has a wide range of usefulnessand is very accurate in its work.

Another object of the invention is to provide a device of this characterwhich will possess advantages in points of cflic'iency and durability,is inexpensive to manufacture and at the same time is simple inconstruction and operation.

With the above and other objects in view, the invention consists in thenovel features of construction and the combination and arrangement ofparts hereinafter more fully described, pointed out in the claims andshown in the accompanying drawings, in which,

Figure 1 is a side elevation illustrating an instrument constructed inaccordance with our invention; Fig. 2 is a top plan view, the devicebeing folded to an inoperative po sition; and Fig. 3 is a side elevationof the key adapted to operate the set screw which holds the adjustablebar in an operative position.

Referrin more particularly to the drawings, 1 in icates the elongatedbody portion of the device which is provided upon one side thereof withan extension 2. Mounted in one end of the body 1 is a pivot pin 3 whichis held securely in position by means of the set screw 4, said set screwbeing held securely in place by means of the head 5 which is countersunkin the side wall of the body 1. Pivotally mounted upon the pin 3 is abar 6 which is adapted to be arranged at various angles with respect tothe body member 1 and which is held securely in various positions bymeans of the brace members 7 and 8, one of said brace members beingpivotally secured to the bar 6 and the other of said brace members beingdisposed within an elongated recess 9 and pivotally mounted between theend f said elongated recess, A set screw" 10 is carried by the free endof the brace member 7 and adapted to be arranged within an elongatedslot 11 which is formed in the brace member 8 so that the two bracemembers may be quickly and easily adjusted to hold the lmr (S in variouspositions. It will be apparent that when the bar 6 is not in use, itwill be arranged in parallel relation with the body member 1 and adaptedto rest upon the extension 2. The brace members 7 and 8 when not in usewill be disposed within the recess 9 entirely out of the way. A pin 1.2is formed ,adjacent the outer end of the'bar (S and extends at rightangles thereto, said pin being adapted for engagement with one end of amicrometer or other measuring instrument when obtaining various anglesand is disposed within the recess 13 formed in the body member when notin use. The head 5 of the set screw 4 is provided with the alinedopenings '14 which .are adapted to receive the alined studs 15 formedupon the key 16 so that the set screw may be quickly and easily loosenedor tightened to adjust the bar 6. It Will be apparent that the bar (3 isrounded off at its inner end as shown at 17 so that the same will beallowed to swing and not engage with the extension 2.

Our improved precision gage is especially adapted for use by high grademechanics, tool makers, engineers and others who have to measure anglesto a very high degree of accuracy. The gage in its resent form isdesigned to take the place 0 the protractor on very accurate work. Thegage is also adapted for use in setting work or machine tools such aslathes, laners, milling machines and various ot er similar machineswhere various angles are required.

This tool can be set or its reading taken by the use of size blocks,micrometers, verniers, depth gages and also height gages, and the degreeof accuracy to which it can be set or its reading taken will depend onhow skilful the operator is. In the hands of a skilful workman, theerror will be less than onehalf inch in a thousand feet, .00048 in onefoot, .00004 in one inch.

From the above description taken in connection with the accompanyingdrawings, it will be readily apparent that we have provided a simple anddurable precision gage which has a wide range of usefulness and is veryaccurate in its work and which can be manufactured at an extremely lowcost. 7 v

While we have shown and described the preferred form of my invention, itwill be obvious that various changes in the details of construction andin the report-ions may be resorted to for successfu 1y carrying ourinvention into practice without sacrificing any of the novel features ordeparting from the scope of the appended claims.

What we claim is v 1. In a toldin device of the character described, thecom ination of a body having a recess formed on one side thereof, anextension formed upon one side of said body, a bar pivotally secured tothe end of the body and arranged in parallel relation therewith when notin use, adjustable brace members pivotally secured to said bar and bodyfor adjusting the bar to various positions, said brace members beindisposed Within said recess when the device is folded, said body beingprovided with a transverse recess adjacent one end thereof, a pin formedadjacent the outer end of the bar and extending at right angles theretoand extending Within said transverse recess when the device is folded.

ineness body and disposed at right angles thereto, a

bar pivotally secured to one end of the bod and arranged in parallelrelation therewit when not in use and adapted to rest upon saidextension, said body having an elongated recess thercin, brace memberspivotally securedto said body and bar and disposed Within said recesswhen said device is folded, one of said brace members being providedwith an elongated slot, a set screw carried by the other of said bracemembers and disposed within said slot, said body being provided with atransverse recess adjacent one I end thereof, a pin formed adjacent theouter end of the bar and extending at right angles thereto and disposedWithin said transverse recess when the pivoted bar is not in use.

In testimony whereof We hereunto afiix our signatures in the presence oftwo witnesses.

FRIEDRICH AUGUST HOLLANDT. JOHN W. SMITH. Witnesses:

' C. F. ENGLERT,

"W. W. BURCH.

